#include<iostream>
void swapr (int & a,int &b);
void swapp(int * p,int *q);
void swapv(int a,int b);
int main()
{
	using namespace std;
	int wallet1=300;
	int wallet2=350;
	cout<<"wallet1 = $"<<wallet1;
	cout<<" wallet2 = $"<<wallet2<<endl;
	
	cout<<"Using pointers to swap contents again:\n";
	swapp(&wallet1,&wallet2);
	cout<<"wallet1 = $"<<wallet1;
	cout<<" wallet2 = $"<<wallet2<<endl;
	
	cout<<"Trying to use passing by value:\n";
	swapv(wallet1,wallet2);
	cout<<"wallet1 = $"<<wallet1;
	cout<<" wallet2 = $"<<wallet2<<endl;
	
	cout<<"Trying to use passing by value:\n";
	swapv(wallet1,wallet2);
	cout<<"wallet1 = $"<<wallet1;
	cout<<" wallet2 = $"<<wallet2<<endl;
	return 0;
}

void swapr(int & a,int & b)
{
	int temp;
	
	temp=a;
	a=b;
	b=temp;
}

void swapp(int * p,int * q)
{
	int temp;
	temp=*p;
	*p=*q;
	*q=temp;
}

void swapv(int a,int b)
{
	int temp;
	
	temp=a;
	a=b;
	b=temp;
}
